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首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >The statistical correlation of the coefficient of friction and wear rate of PTFE composites with steel counterface roughness and hardness
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The statistical correlation of the coefficient of friction and wear rate of PTFE composites with steel counterface roughness and hardness

机译：PTFE复合材料的摩擦系数和磨损率与钢表面粗糙度和硬度的统计相关性

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摘要

The results of tribological research of selected PTEE composites sliding against steel counterfaces of different hardness and roughness under dry friction conditions are treated in this article. The roughness of steel surface is described with different parameters such as R{sub}a, R{sub}z, R{sub}(3z), R{sub}p, R{sub}k, S{sub}m, Δα, r, Δ, etc. Based on the experimental results obtained, regression functions showing the influence of the aforementioned parameters on the tribological properties of composites were found. Using test F, the evaluation of correlation of the regression function with the results of the researches was obtained. In some cases this correlation was strong and in the other, weak. A detailed analysis showed that the roughness parameters related to the shape of asperities of the profile, i.e. S{sub}m, Δα and R{sub}k, have the strongest influence on the coefficient of friction, while the parameters related to the height of asperities of the profile, i.e. R{sub}p, R{sub}(pk), Δ and R{sub}y, have the strongest influence on the wear of PTFE composites. The R{sub}(3z) parameter appeared to be the most universal one: it may be employed in regression functions describing both the coefficient of friction and specific linear wear rate.
机译：本文对选定的PTEE复合材料在干摩擦条件下在不同硬度和粗糙度的钢对接面上滑动的摩擦学研究结果进行了处理。用不同的参数来描述钢表面的粗糙度，例如R {sub} a，R {sub} z，R {sub}（3z），R {sub} p，R {sub} k，S {sub} m， Δα，r，Δ等。基于获得的实验结果，发现了回归函数，其显示了上述参数对复合材料的摩擦学性能的影响。使用检验F，获得回归函数与研究结果的相关性评估。在某些情况下，这种相关性很强，而在其他情况下则很弱。详细的分析表明，与轮廓的凹凸形状有关的粗糙度参数，即S {sub} m，Δα和R {sub} k，对摩擦系数的影响最大，而与高度有关的参数轮廓凹凸不平，即R {sub} p，R {sub}（pk），Δ和R {sub} y，对PTFE复合材料的磨损影响最大。 R {sub}（3z）参数似乎是最通用的参数：它可用于描述摩擦系数和特定线性磨损率的回归函数。

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